Deductions & credits

My wife and I received 6475 Letters stating we were issued payments totaling $2,800.  TurboTax states we should have received compensation between "March and May 2021", but we received $2,400 in January 2021.

 

I am not following the logic of entering the amounts on the letter "matching" the eligible total of $5600 because I see only one entry for $2,400 in January 2021.  When I enter the $2400, TurboTax says the Federal Refund jumps by $3,200, which does not seem right either.

 

Does the "eligible" $5600 total include 2020, or does it only apply to 2021?  If it is 2021 only, then we most certainly did not receive a payment of $5600; however, I am not sure how we reflect that correctly in TurboTax.  Please advise.  Thanks.